Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Smith & Wesson 12481 M&P M2.0 Sub-Compact 9mm Luger 12+1, 3.60" Black Armornite Stainless Steel Barrel & Serrated Slide, Matte Black Polymer Frame w/Picatinny Rail” has been added to the compare list